145639462091 has 2 divisors, whose sum is σ = 145639462092. Its totient is φ = 145639462090.

The previous prime is 145639462051. The next prime is 145639462153. The reversal of 145639462091 is 190264936541.

145639462091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145639462091 - 2⁶ = 145639462027 is a prime.

It is not a weakly prime, because it can be changed into another prime (145639462051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72819731045 + 72819731046.

It is an arithmetic number, because the mean of its divisors is an integer number (72819731046).

Almost surely, 2^145639462091 is an apocalyptic number.

145639462091 is a deficient number, since it is larger than the sum of its proper divisors (1).

145639462091 is an equidigital number, since it uses as much as digits as its factorization.

145639462091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 145639462091 in words is "one hundred forty-five billion, six hundred thirty-nine million, four hundred sixty-two thousand, ninety-one".